Does JSONPath support macros?

[Henry78]

I try to use {HOST.CONN} in a JSONPath preprocessing rule.

# This works
$.nodes[?(@.host =~ "192.168.0.100")]

# Checking value of HOST.CONN
{HOST.CONN}: 192.168.0.100

# This does not work
$.nodes[?(@.host =~ "{HOST.CONN}")]

I tried a lot of escaping variants, but can't make it work.
Does anybody spot the error? Are macros supported in preprocessing?

[Henry78]

But I found that user macros work in LLD preprocessing. So I think I can work around, though this complicates things for me.

Is this work a feature request?